Cited by 909Bone health and osteoporosis researchBone Metabolism and DiseasesBone fractures and treatments

Pathogenesis of bone fragility in women and men

Seeman, Ego·2002·The Lancet

Abstract

There is no one cause of bone fragility; genetic and environmental factors play a part in development of smaller bones, fewer or thinner trabeculae, and thin cortices, all of which result in low peak bone density. Material and structural strength is maintained in early adulthood by remodelling; the focal replacement of old with new bone. However, as age advances less new bone is formed than resorbed in each site remodelled, producing bone loss and structural damage. In women, menopause-related oestrogen deficiency increases remodelling, and at each remodelled site more bone is resorbed and less is formed, accelerating bone loss and causing trabecular thinning and disconnection, cortical thinning and porosity. There is no equivalent midlife event in men, though reduced bone formation and subsequent trabecular and cortical thinning do result in bone loss. Hypogonadism contributes to bone loss in 20-30% of elderly men, and in both sexes hyperparathyroidism secondary to calcium malabsorption increases remodelling, worsening the cortical thinning and porosity and predisposing to hip fractures. Concurrent bone formation on the outer (periosteal) cortical bone surface during ageing partly compensates for bone loss and is greater in men than in women, so internal bone loss is better offset in men. More women than men sustain fractures because their smaller skeleton incurs greater architectural damage and adapts less effectively by periosteal bone formation. The structural basis of bone fragility is determined before birth, takes root during growth, and gains full expression during ageing in both sexes.

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Crossref · 10.1016/s0140-6736(02)08706-8

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Authors
Seeman, E.
Affiliations
Heidelberg Repatriation Hospital (AU)
Corresponding author
Seeman, Ego
Venue
The Lancet
Publisher
Elsevier BV
Published
2002-05
Volume
359
Issue
9320
Pages
1841-1850
ISSN
  • 0099-5355 (ISSN-L)
  • 0140-6736
OpenAlex
W2056810908
Cited by
909
References
100
Citations by year
2026: 12 · 2025: 26 · 2024: 29 · 2023: 28 · 2022: 28 · 2021: 23 · 2020: 40 · 2019: 34 · 2018: 40 · 2017: 35 · 2016: 30 · 2015: 38 · 2014: 39 · 2013: 42 · 2012: 47
FWCI
7.50
Type
journal article
Language
en
Open access
closed
Locations
  • The Lancet (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Bone health and osteoporosis research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Health Sciences › Medicine › Epidemiology › Bone fractures and treatments
Keywords
bone fragility, osteoporosis, bone loss, bone remodeling, peak bone mass, cortical thinning, bone porosity, menopause, estrogen deficiency, hypogonadism, hyperparathyroidism, calcium malabsorption, hip fracture, sex differences, aging, periosteal bone formation, bone structure
MeSH terms
Adolescent, Aged, Aging, Bone Development, Female, Humans, Male, Osteoporosis, Sex Factors, Bone Density, Bone Remodeling

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